When looking for bus stops in London, England, a simple white sign with a red London transport symbol means that the stop is a main stop and all buses will stop there automatically.
Red signs with a white London Transport symbol signify that it is a requested bus stop. This means that the bus will not stop automatically, so you must reach out to 'call' the bus when it approaches.
To get off the bus
If you want to get off a bus at a requested bus stop, you must ring the bell (one time only). Make sure to give the driver enough notice to stop.
Knowing your bus stops can come in handy when you find out about the regular London Underground weekend engineering jobs.
